Transcript for Cash Incentives and a Great Song May Be All You Need to Get in Shape

For all of us resolving to get in shape and lose weight every new year the what -- there is a secret a song that can keep the resolution from fading away. ABC's Matt -- hits the play button tonight. Mild mannered but I can -- his fingers. -- -- Using the old to make motivate -- For she'd stick to that perennial sharp enough room -- New Year's resolution is getting fit. That Metalico -- is that -- fires in fact one study shows music can boost your athletic performance. -- to 15%. A survey in one big magazine found AC DC's back in black. It's not workouts honorable time but -- -- finds it's the songs that -- between a 14840. Beats per minute. Most of -- the inner rocky. That needs the best work out songs are like learning lines at 120 beats per minute walk -- got nonstop gangland style. Thirty few beats a minute. But Rockies -- -- tiger. And wimpy 109. But it rocking beats aren't enough to get you working out how about the few bucks. Apps like huge impact -- discovered a new way to get you into the -- you sit up with your credit card your money going to a pot. The app tracks when you -- -- -- -- in state for at least thirty minutes if you don't go you pay a fine little as five dollars but she camping up to fifty. But if you do -- that you can get your money back and more. Today the best motivate her once that music hitting the treadmill and trying. In new yeah. Matt Gutman ABC news plan.

This transcript has been automatically generated and may not be 100% accurate.

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